S
M
T
W
T
F
S
30
78°
45°
31
83°
37°
1
84°
46°
2
76°
45°
3
70°
49°
4
70°
48°
5
77°
46°
6
80°
48°
7
68°
45°
8
72°
36°
9
79°
38°
10
83°
42°
11
78°
42°
12
82°
39°
13
74°
42°
14
65°
40°
15
75°
33°
16
82°
37°
17
66°
51°
18
57°
47°
19
66°
46°
20
71°
40°
21
75°
42°
22
70°
44°
23
74°
44°
24
81°
42°
25
81°
41°
26
67°
36°
27
N/A
28
70°
39°
29
74°
36°
30
75°
41°
1
77°
41°
2
82°
38°
3
78°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Clayton
Clayton's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Clayton. See also: October | November | December.